U.S. patent application number 13/435068 was filed with the patent office on 2013-10-03 for negative pressure earphone.
This patent application is currently assigned to Eastern Technologies Holding Limited. The applicant listed for this patent is Chu Ming Chung, Lee Pin Tang. Invention is credited to Chu Ming Chung, Lee Pin Tang.
Application Number | 20130259286 13/435068 |
Document ID | / |
Family ID | 49235065 |
Filed Date | 2013-10-03 |
United States Patent
Application |
20130259286 |
Kind Code |
A1 |
Chung; Chu Ming ; et
al. |
October 3, 2013 |
Negative pressure earphone
Abstract
A negative pressure earphone includes a main body, a cover
portion, a silica gel earplug, a filtering net and a moving coil
sound unit. The silica gel earplug is fitted to the protruding end
of the main body. The filtering net is provided on the opening of
the protruding end and the moving coil sound unit is disposed
inside the main body. The cover portion is fitted to the other end
of the main body. A sealing framework portion is disposed inside
the main body and the moving coil sound unit is fitted to the
sealing framework portion. A negative pressure portion is disposed
on the sealing framework portion. The negative pressure earphone of
the present invention is structurally simple and water resistant
and does not have to have an opening in its cover portion.
Inventors: |
Chung; Chu Ming; (Gand
Cayman, KY) ; Tang; Lee Pin; (Grand Cayman,
KY) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Chung; Chu Ming
Tang; Lee Pin |
Gand Cayman
Grand Cayman |
|
KY
KY |
|
|
Assignee: |
Eastern Technologies Holding
Limited
|
Family ID: |
49235065 |
Appl. No.: |
13/435068 |
Filed: |
March 30, 2012 |
Current U.S.
Class: |
381/380 |
Current CPC
Class: |
H04R 1/1016 20130101;
H04R 1/44 20130101; H04R 1/2834 20130101 |
Class at
Publication: |
381/380 |
International
Class: |
H04R 1/10 20060101
H04R001/10 |
Claims
1. A negative pressure earphone, comprising: a main body; a cover
portion, fitted to the rear end of the main body; a silica gel
earplug, fitted to the protruding end of the main body; a filtering
net, fitted to the protruding end of the main body; and a moving
coil sound unit, disposed inside the main body, wherein a sealing
framework portion is disposed inside the main body and the moving
coil sound unit is fitted to the sealing framework portion, and
that a negative pressure portion is disposed on the sealing
framework portion and the moving coil sound unit and the negative
pressure portion are horizontally fitted to the sealing framework
portion.
2. The negative pressure earphone as in claim 1, wherein the
negative pressure portion may comprise one or more negative
pressure elements, which are disposed on the sealing framework
portion, and wherein the sealing framework portion, negative
pressure portion and moving coil sound unit may be fitted or
arranged in different manners and at different angles.
3. The negative pressure earphone as in claim 1, wherein the
negative pressure portion has a planer base portion, which may be
made of a thin film or layer of metal, macromolecular chemical or
organic material.
4. The negative pressure earphone as in claim 3, wherein the base
portion is sandwiched between a lower portion and an upper portion,
which are made of a composite material.
5. The negative pressure earphone as in claim 4, wherein the
composite material may be metal, macromolecular chemical or organic
material.
6. The negative pressure earphone as in claim 3, wherein a
connective portion is provided on either side of the planer base
portion and an opening provided in the middle part of the planer
base portion is optional and does not affect the functionality.
7. The negative pressure earphone as in claim 6, wherein an end
piece may be connected to the end of either connective portion and
these two end pieces are provided to facilitate the manufacturing
and are optional and do not affect the functionality.
8. The negative pressure earphone as in claim 3, wherein the
surfaces of the two connective portions, lower portion and upper
portion may be smooth or have a certain pattern.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The invention generally relates to an earphone. More
particularly, the invention relates to a negative pressure
earphone.
[0003] 2. Description of the Prior Art
[0004] In the conventional earphones, a moving-coil
sound-generating unit works according to the principles of
electromagnetism and Fleming's left-hand rule. As electricity is
fed to the sound generating unit, a diaphragm starts to vibrate.
However, as the earphone is attached to an ear, a rapid air flow is
generated and causes the diaphragm to deform and generate the
unpleasant noises.
[0005] Please refer to FIG. 5, which illustrates the conventional
earphone. The earphone comprises a main body 1, a cover portion 2,
a silica gel earplug 3, a filtering net 4 and a moving coil sound
unit 5. The silica gel earplug 3 is fitted to the protruding end
111 of the main body 1. The filtering net 4 is provided on the
opening of the protruding end and the moving coil sound unit 5 is
disposed inside the main body 1. The cover portion 2 is fitted to
the other end of the main body 1. One or more holes or openings 10
and 11 are provided in the main body 1 and the cover portion 2. The
moving coil sound unit 5 is disposed inside the main body 1.
Generally speaking, in the prior art, the moving coil sound unit 5
may have better performance of low-pitched sounds at the cost of
the performance of medium-pitched and high-pitched sounds;
similarly, the moving coil sound unit 5 may have better performance
of high-pitched sounds at the cost of the performance of
low-pitched sounds. Moreover, with the presence of these openings
10 and 11, to achieve the optimal sound performance is relatively
difficult.
SUMMARY OF THE INVENTION
[0006] A negative pressure earphone is disclosed. The negative
pressure earphone of the present invention comprises a main body, a
cover portion, a silica gel earplug, a filtering net and a moving
coil sound unit. The silica gel earplug is fitted to the protruding
end of the main body. The filtering net is provided on the opening
of the protruding end and the moving coil sound unit is disposed
inside the main body. The cover portion is fitted to the other end
of the main body. A sealing framework portion is disposed inside
the main body and the moving coil sound unit is fitted to the
sealing framework portion. A negative pressure portion is disposed
on the sealing framework portion. The moving coil sound unit and
the negative pressure portion are fitted to the sealing framework
portion. The negative pressure earphone of the present invention is
structurally simple and water resistant and does not have to have
an opening in the cover portion and main body. An object of the
present invention is to provide a negative pressure earphone in
which the incoming air flow may be diverted to avoid the
deformation of the diaphragm caused by the rapid air flow as the
earphone is inserted into an ear.
[0007] One or more negative pressure portions may be disposed on
the sealing framework portion. These negative pressure portions may
be disposed on the sealing framework portion horizontally or in a
tilted manner according to the actual structural need.
[0008] These negative pressure portions may have a design according
to the shape and structure of the earphone. Therefore, the negative
pressure portion may be made of several layers or films that are
made of different materials, which include metal, macromolecular
chemical and organic material. The negative pressure portion
includes a planer base portion, which is made of a layer or film of
metal, macromolecular chemical and organic material.
[0009] The base portion may be sandwiched between a lower portion
and an upper portion, which are made of a composite material.
[0010] The composite material may be metal, macromolecular chemical
and organic material.
[0011] A connective portion may be provided on either side of the
planer base portion.
[0012] In addition, an end piece may be connected to the end of
either connective portion so that the negative pressure portion may
be fitted to the sealing framework portion through the engagement
between either end piece and the corresponding hole provided in the
sealing framework portion.
[0013] With the presence of the negative pressure portion, the
deformation of the diaphragm caused by the rapid air flow as the
earphone is inserted into an ear may be avoided and better sound
effect (especially the low-pitched sounds) may be achieved.
Therefore, in the negative pressure earphone of the present
invention, the openings in the main body and the cover portion in
the prior art are not needed. Moreover, the concept of the present
invention may be used in the underwater water resistant earphones,
which do not have such negative pressure portion in the prior
art.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is a perspective view of the negative pressure
earphone of the present invention.
[0015] FIG. 2 is an exploded view of the negative pressure earphone
of the present invention.
[0016] FIG. 3 is a sectional view of the negative pressure earphone
of the present invention.
[0017] FIG. 4 is a sectional view of the negative pressure earphone
of the present invention, showing the direction of the incoming
flow.
[0018] FIG. 5 is a sectional view of the earphone of the prior art,
showing the direction of the incoming flow.
[0019] FIG. 6 is an enlarged sectional view of the negative
pressure portion of the negative pressure earphone of the present
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0020] The features and advantages of the present invention will be
fully understood and appreciated from the following detailed
description of the accompanying drawings. The negative pressure
earphone of the present invention is illustrated in FIGS. 1, 2 and
3. The negative pressure earphone of the present invention
comprises a main body 1, a cover portion 2, a silica gel earplug 3,
a filtering net 4 and a moving coil sound unit 5. A diaphragm 6 is
provided on the moving coil sound unit 5 and the silica gel earplug
3 is fitted to the protruding end of the main body 1. The filtering
net 4 is provided on the opening of the protruding end and the
moving coil sound unit 5 is disposed inside the main body 1. The
cover portion 2 is fitted to the other end of the main body 1. A
sealing framework portion 8 is disposed inside the main body 1 and
the moving coil sound unit 5 is fitted to the sealing framework
portion 8. A negative pressure portion 9 is disposed on the sealing
framework portion 8. The moving coil sound unit 5 and the negative
pressure portion 9 are horizontally fitted to the sealing framework
portion 8. The sealing framework portion 8 has two openings to hold
the moving coil sound unit 5 and the negative pressure portion 9.
In addition, a plurality of such negative pressure portions 9 may
be disposed on the sealing framework portion 8 horizontally or in a
tilted manner according to the actual structural need.
[0021] As illustrated in FIGS. 4 and 5, thanks to the negative
pressure portion 9, the incoming air flow 12 illustrated in FIG. 5
is diverted into the air flow 14 illustrated in FIG. 4. When the
earphone is inserted into an ear, the air flow 14 exerts pressure
on the negative pressure portion 9 and exerts little or no pressure
on the diaphragm 6; therefore, the diaphragm 6 is not deformed 23
as illustrated in FIG. 5 and no noises are generated. Also, the
opening 10 is not needed. When the earphone is in operation, the
air flow 13 generated by the vibrations of the diaphragm 6 exerts
pressure on the negative pressure portion 9 to generate the counter
flows 15 and 16. Therefore, better low-pitched sound effect may be
achieved without the openings provided in the earphone.
[0022] Please see FIG. 5, which illustrates the conventional
earphone. As the earphone is inserted into an ear, a rapid air flow
12 exerts pressure on the diaphragm 6 to generate the air flows 18,
19 and 21 as well as circular air flows 22. These flows 18, 19, 21
and 22 in turn generate counter flows 20. These flows 18, 19, 21,
22 and 20 cause the diaphragm 6 to deform 23 and generate the
unpleasant noises. To solve this problem, an opening has to be
provided in the front portion of the main body 1 so as to let out
these flows. Therefore, with the presence of such opening, the
earphone of the prior art is not water resistant.
[0023] As illustrated in FIG. 6, the negative pressure portion 9
comprises a planer base portion 28, a lower portion 26, an upper
portion 27, two connective portions 25 and two end pieces 24. The
base portion 28 is sandwiched between the lower portion 26 and the
upper portion 27, which are made of a composite material. The end
piece 24 is connected to the end of either connective portion 25.
The planer base portion 28, lower portion 26 and upper portion 27
may be made of a thin film or layer of metal, macromolecular
chemical or organic material. The two connective portions 25 are
optional and they are provided to facilitate the manufacturing. The
planer base portion 28, lower portion 26, upper portion 27 and two
connective portions 25 may have various types of shapes according
to the internal volume and structure of the earphone. Therefore,
the negative pressure portion 9 may be made of several layers or
portions that are made of different materials, which include metal,
macromolecular chemical and organic material. Also, no restrictions
are specified on the shape of the negative pressure portion 9 and
how its components are combined together.
[0024] Many changes and modifications in the above described
embodiment of the invention can, of course, be carried out without
departing from the scope thereof. Accordingly, to promote the
progress in science and the useful arts, the invention is disclosed
and is intended to be limited only by the scope of the appended
claims.
* * * * *